Surname دوناي (Dunai 
, Donnay 
, Daunay 
) , in the world, is quite a common cognomen. The last name دوناي is habitual in Hungary, where it is quite a common surname, Belgium, where it is quite a rare surname, and Moldova. Not in comparison with a country's population, it is the most numerous in Hungary, France, and Belgium. Much less frequently, دوناي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dunai | Spain, Hungary, Moldova, United States, India |
| Donnay | Belgium, Spain, United States, India, France |
| Daunay | United Kingdom, United States, India, Canada, France |